How long will the EcoFlow DELTA Pro 3 run a home oxygen concentrator?

About 10 hours from a full charge. A home oxygen concentrator averages about 350 W, and the 4,096 Wh battery gives about 3,482 Wh after inverter losses. That is 10% of the battery an hour.

Will the EcoFlow DELTA Pro 3 start a home oxygen concentrator?

Yes. It needs about 1,050 W for a moment when the compressor starts, and the EcoFlow DELTA Pro 3 is rated for 8,000 W surge, 7.6 times that. Avoid starting other motors at the same moment.

Is the EcoFlow DELTA Pro 3 enough backup for a home oxygen concentrator?

Only as a short bridge. It covers about 10 hours from a full charge. A power station should never be your only backup for medical equipment: ask your equipment supplier what they provide in an outage, register with your utility’s medical-needs program, and keep the settings your prescriber gave you.

EcoFlow · Will it run?

Can the EcoFlow DELTA Pro 3 run a home oxygen concentrator (5 L)?

Published October 15, 2026

Short answerYes

Yes. The EcoFlow DELTA Pro 3 runs a home oxygen concentrator for about 10 hours from a full charge. It needs about 1,050 W for a moment when the compressor starts, well within the 8,000 W surge rating, then about 350 W while running against 4,000 W continuous.

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Key numbers

Runtime: 10 hrs; from a full charge
Battery used per hour: 10%; at 350 W average

Home oxygen concentrator (5 L)

Running: 350 W; 275–400 W range
Start-up: 1,050 W
Average: 350 W; runs all the time

EcoFlow DELTA Pro 3

Battery: 4,096 Wh; about 3,482 Wh usable
Output: 4,000 W; continuous
Surge: 8,000 W; start-up peak

How we worked it out: 4,096 Wh × 0.85 ÷ 350 W = about 10 hours. The 0.85 covers inverter and battery losses. We do not test units ourselves; the numbers come from the official spec sheets and typical device draws. How we pick

EcoFlow DELTA Pro 3

4,096 Wh · 4,000 W output · 8,000 W surge · 113.5 lb

Full specs and runtimes

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What else the EcoFlow DELTA Pro 3 runs

One device at a time, from a full charge.

Other power stations for a home oxygen concentrator

The nearest sizes that also run it.

Keep going

Real runtime depends on the model you own, room temperature and battery age. The 10 hours above is an estimate, not a measured result.

Common questions

How long will the EcoFlow DELTA Pro 3 run a home oxygen concentrator?: About 10 hours from a full charge. A home oxygen concentrator averages about 350 W, and the 4,096 Wh battery gives about 3,482 Wh after inverter losses. That is 10% of the battery an hour.
Will the EcoFlow DELTA Pro 3 start a home oxygen concentrator?: Yes. It needs about 1,050 W for a moment when the compressor starts, and the EcoFlow DELTA Pro 3 is rated for 8,000 W surge, 7.6 times that. Avoid starting other motors at the same moment.
Is the EcoFlow DELTA Pro 3 enough backup for a home oxygen concentrator?: Only as a short bridge. It covers about 10 hours from a full charge. A power station should never be your only backup for medical equipment: ask your equipment supplier what they provide in an outage, register with your utility’s medical-needs program, and keep the settings your prescriber gave you.